Absorption-tower



l (No Model.) '8 V I' H. WBIDIG.

l ABSORPTION TO'WER. l No. 376,929. PatentedJem. 24, 1888;:

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UNiTHD STATES;

. HENRY PH. wEiDiG, or PHILADELPHIA, PENNSYLVANI ABSORPTIQN-TOWER.

SPECIFICATION forming pari'. ofiLetters Patent-N. 376,929, dated January 24, 1888.`

' Application filed september s, lssrfseriainoelaosa (No modemfv .To all whom tmay concern.-

Be it known that I, HENRY PH. WEIDIG, of Philadelphia1in the county of Philadelphia and State of Pennsylvania, have invented ,certain new and useful Improvements in Absorption-Towers, of whichthe following isa specication. l This invention relates to improvements in absorptiontowers for the manufacture of muxc riatic or nitric acid; and the object of my in-` vention is to provide an'absorption-tower of such construction that. when the same is Y erected and packed itv can be used continuzo extendingy from the bottom to a short distance from the top, and each section being alsoprovvided with'a laterally-projecting external cup,

open at the top and in communication with the bottom part of the section. f

In the accompanying drawings, Figure 1 is an elevation of one of the towers. Fig. 2 is a crosssectional view ofthe other tower. Fig.

3 is a horizontal sectional view on line as a',

Fig. 4is a topview of one of the tow- Fig-'5 is a detail cross-sectional view on line y y, Fig. l, parts being broken out.

f Similar letters of reference indicate corre- Each toweris composed of a series of cylindrical sections, A, made of earthenware, having closedbottoms and open tops and provided with exterior annular upwardly-pro-v jecting iianges B at their open ends. The sections Aare placedl one upon the other, the

4c bottom part of one section passinginto the annular flange B on thegtop of the next lower section, the` joints being carefully packed and closed. Upon the uppermost section a'cover,

C, is placed, which is provided with a central neck, D, for coupling the pipe that leads the gases or fumes into the tower. Y

Each cylindrical section A is provided withl an upwardly-projecting channel, E, yformed on the inside-and extending from the bottom 5o 'of thesection to within about one-quarter of the height of the section from xthe top. The

sections are so placed that the channels D are alternately at opposite sides, so as to lengthen Y theV course of the gas as muchas `possible.` Each section is also provided vwith a semitubular-upwardlylextending exterior projecby an aperture, G. The upper 'edges y,of the projections orcups F arexon the samelevel with the tops vof the corresponding channels,E,

of the sections. The upper' ianges, B, of the sections must be recessed, so as to'p'ermitthe.`r bottom parts of the projectingcups F.to, pass through them, as shownin Fig. 1. .The bottom sections are not provided with vertical channels E, Vbut are provided withvlater'allyprojecting necks H, which are coupled byay horizontal pipe, J.

Y The operation is as follows: `Thehot gasesy vfrom the retorts or converters are conducted into the top ofone tower, the gases passing from'one chamber to the other by means of channelsE, and, coming in lcontact with a largesurface of water, a great'amount is absorbed.

The gases'lrise upward inthe second tower,

and,if necessary, are drawn up by means-of a acid inthe tower into which the gases are firsty `suction apparatus, whereby the remaining conducted at the top is almost concentrated,

the pipe for conducting the gases to the tow'- ers is replaced-that is to say, 'it is .placed on uthe top of the other tower-so that thefgases,l

pass downward in ,the tower in which they formerly passed upward, and the weaker gasesv pass upwardiin the'towerinwhich thestrongerf gases formerly passed downward, whereby the acids in both towers are concentrated. *Dur- `ing the operation a hydrometer ,is placed into then again filled with water poured in through the cups F.

Vacid is removed from thev sections by means of siphons placed into the cups F. The tower is i Having thus described my invention, I-claim as new and desire to secure by Letters Pat- `enti l. Anabsorptioirtower for the manufactureof muriatic or nitric acid, composed of a seriesl of cylindrical sections open at'the. top and f closed at the bottom, eaeh section having a vertical channel extending from the bottom to a shortdistanee from the top, and each section being also provided with an external laterally-projecting cup open at the top and in communication with the bottom part of the section, substantially as herein shown anddescribed.

2. A section of an absorptiontower for the manufacture of muriatic or nitric acid, consisting of a cylinder closed atits bottom and flanged externally at its open topand provided with a vertical channel extending from the bottom HENRY PH. WEIDIG.

VVitnesses: 4

, FRANK S. CHRISTIAN,

ROBERT B. TERRY. 

